Savvy ponderable:A cowboy's only afraid of two things:havin' ta walk,and the love of a good woman."This posting was generated using an environmentally friendly, self contained flatulence generator, therefore no fossils or neutrons were harmed in the creation of this posting.

Let's not start another copyright problem thread. These images likely came from Tejas Coach Works' site (Mineral Wells, TX). At least that's where I saw them a few years back. I don't know if they are the original owner of the images, but Tejas' site also gives a LOT of good info on bad oil for DD's.

How much difference does it make? The guys who designed these engines tested, and tested and tested under many, many different engine applications and came up with the they truly believed is the best possible lubricant for all the across the board situations.

And we, who have garnered all the Degrees, are going to challenge them and their findings? And at the cost of a complete rebuild?

C'mon, how dumb are we? There might be those of you who will question the findings...do so at your own peril...as I won't. I've worked with Detroits for enough years to know that the folks who built them understand them better than we ever could.

FWIW

Ncbob

Logged

True friends are difficult to find, hard to leave and impossible to forget.

How much difference does it make? The guys who designed these engines tested, and tested and tested under many, many different engine applications and came up with the they truly believed is the best possible lubricant for all the across the board situations.

And we, who have garnered all the Degrees, are going to challenge them and their findings? And at the cost of a complete rebuild?

C'mon, how dumb are we? There might be those of you who will question the findings...do so at your own peril...as I won't. I've worked with Detroits for enough years to know that the folks who built them understand them better than we ever could.

FWIW

Ncbob

Very well said. Another expert group worth listening to are those who are responsible for keeping the large fleets on the road while keeping cost and downtime under control. And from what I have seen, they also agree with the designers and the conclusions expressed on the Tejas site.

I am fortunate to have a great engine and wouldn't think of taking a chance on ruining it by deviating from tried and true practices.

Did not intend to get into possible copyright issues. I got these from a track machine website.Thanks for the link to Tejas, good stuff there.Another reason some owners may be using different oil than 40W is what I have seen on both Prevost and Eagle coaches. On the power steering reservoir there is sometimes a label stating 30W or 10-30W. It is the only label referring to oil that I could find in the engine compartment.

BTW...Just got back from Walmart and you can get a 5 gal bucket of 40W CF2 in Canada for 31.98

Keep in mind that just because the BIG store says Wal-Mart doesn't mean they are all the same. Each district carries what they move the most of in each store such as the ones we have here locally all sell the same imported junk where as the ones down further south near where Jack lives sells farming stuff. We ain't got no farming stuff up in these parts! We'uns are city slickers' in these hea parts and all we gets is junk to chooze from!

Ace

PS: Our local city wal-marts do NOT carry straight 40w oil of any kind. Now i may find it at our local city type Tractor Supply but not sure!

DD manual states over 30 years I know of 30w or 40w no 10w40 Advance and Auto Zone carry Rotella T in 30w. If I couldn't find 40w I would sure use 30w instead of 10w40. There are starting issuses and warm up that has great effect on Detroit. Not only that I 't will slober more and blow out more oil.

Most WalMarts I've stopped at only carry the multigrade junk, so you folks are lucky. But I've always had good luck with NAPA (special order, next day) once I figured out their part # for the RotellaT 40wt. Some of their counter folks look at me funny... but I'm used to that!

There's entire fleets of 2-strokes still out in transit and charter service. So CF2 is readily available, if you know who to ask.